Thank you for the question. These types of companies should be regulated so the short answer is no, they will of course take a fee for their work, but so long. as they are a legitimate company they have rules, laws and governing bodies they require to report to therefore they would not be able to steal your money. If for any reason this happened there would be legal recourse for you. You will want to do some due diligence on the company prior to investing your money.
I shall provide you with a helpful link that will assist you in finding a solicitor/representative near your local area. This will provide you with someone nearby your area who can assist you if required.
I hope this information proved helpful. You will find a local solicitor who deals with these matters on the law society webpage which is as follows;
https://www.lawsoc-ni.org/solicitors (N. Ireland)
Hopefully, I have answered your query in a way that is simple and easy to understand. If anything remains unclear, I will be more than happy to clarify it for you. In the meantime, thank you once again for using our services.
Should you require any further assistance on this matter, please do not hesitate to post a further questions for additional assistance.